21583520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2753}}^1$

素因数の和:2782

約数の個数: 72

約数和(自身を含む): 59337684

約数和(自身を除く): 37754164

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2753, 3920, 5506, 7840, 11012, 13765, 19271, 22024, 27530, 38542, 44048, 55060, 77084, 88096, 96355, 110120, 134897, 154168, 192710, 220240, 269794, 308336, 385420, 440480, 539588, 616672, 674485, 770840, 1079176, 1348970, 1541680, 2158352, 2697940, 3083360, 4316704, 5395880, 10791760, 21583520]

約数ペア:

[(1, 21583520), (2, 10791760), (4, 5395880), (5, 4316704), (7, 3083360), (8, 2697940), (10, 2158352), (14, 1541680), (16, 1348970), (20, 1079176), (28, 770840), (32, 674485), (35, 616672), (40, 539588), (49, 440480), (56, 385420), (70, 308336), (80, 269794), (98, 220240), (112, 192710), (140, 154168), (160, 134897), (196, 110120), (224, 96355), (245, 88096), (280, 77084), (392, 55060), (490, 44048), (560, 38542), (784, 27530), (980, 22024), (1120, 19271), (1568, 13765), (1960, 11012), (2753, 7840), (3920, 5506)]